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<head>
    <meta charset="UTF-8">
    <title>组合选择器</title>
    <style type="text/css">
        .combinationP,.combinationH2,.combinationH1{
            color: red;
            font-size: 100px;
            background: blue;
        }
    </style>
</head>
<body>
<p class="combinationP">p 组合选择器</p>
<h1 class="combinationH1">h1 组合选择器</h1>
<h2 class="combinationH2">h2 组合选择器</h2>
</body>
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